Crystallization of TiO2-MoS2 Hybrid Material under Hydrothermal Treatment and Its Electrochemical Performance

Abstract

Hydrothermal crystallization was used to synthesize an advanced hybrid system containing titania and molybdenum disulfide (with a TiO2:MoS2 molar ratio of 1:1). The way in which the conditions of hydrothermal treatment (180 and 200 °C) and thermal treatment (500 °C) affect the physicochemical properties of the products was determined. A physicochemical analysis of the fabricated materials included the determination of the microstructure and morphology (scanning and transmission electron microscopy—SEM and TEM), crystalline structure (X-ray diffraction method—XRD), chemical surface composition (energy dispersive X-ray spectroscopy—EDS) and parameters of the porous structure (low-temperature N2 sorption), as well as the chemical surface concentration (X-ray photoelectron spectroscop—XPS). It is well known that lithium-ion batteries (LIBs) represent a renewable energy source and a type of energy storage device. The increased demand for energy means that new materials with higher energy and power densities continue to be the subject of investigation. The objective of this research was to obtain a new electrode (anode) component characterized by high work efficiency and good electrochemical properties. The synthesized TiO2-MoS2 material exhibited much better electrochemical stability than pure MoS2 (commercial), but with a specific capacity ca. 630 mAh/g at a current density of 100 mA/g.

H3PO4-Assisted Synthesis of Apricot Shell Lignin-Based Activated Carbon for Capacitors: Understanding the Pore Structure/Electrochemical Performance Relationship

“…As a crucial parameter of porous materials, the pore structure affects the function of porous materials. , In the case of employing porous carbons as electrode materials, some works have shown that the specific surface area plays a significant role in their electrochemical applications. , Deng et al indicated that porous carbon that has a higher specific surface area possesses a higher mass-specific capacitance. In other words, specific surface area was linearly positively related to mass-specific capacitance.…”

Modern Nanocomposites and Hybrids as Electrode Materials Used in Energy Carriers

“…The authors in work [ 43 ] showed the solvothermal method to be an efficient tool for the preparation of V x O y -TiO 2 -rGO materials with uniform spherical morphology. The addition of vanadium precursor to the reaction system facilitates the aggregation of particles into large conglomerates.…”

Hybrid Structures of Sisal Fiber Derived Interconnected Carbon Nanosheets/MoS2/Polyaniline as Advanced Electrode Materials in Lithium-Ion Batteries

“…The oxidation peak at 1.62 V can be ascribed to partial oxidation of Mo to form MoS 2 , and the following oxidation peak located at 2.32 V was associated with the oxidation of Li 2 S into S [ 26 ]. In the second cycle, the peaks at 1.07 and 0.49 V disappeared, and two new peaks at about 2.0 and 1.3 V appeared for the conversion of S to Li 2 S and the association of Li with Mo [ 27 , 28 ], respectively. In the third cycle, the CV curve was almost coincident with the CV curve of the second cycle, indicating that the redox pair was highly reversible.…”